Battery Testing; Testing Procedures; Open Circuit Voltage Test (Ocv); Load Test - Polaris IQ 2007 Service Manual

Battery and Electrical Systems

BATTERY TESTING

Testing Procedures

Batteries should be kept at or as near full charge as possible. If
the battery is stored or used in a partially charged condition, hard
crystal sulfication will form on the plates, reducing their
efficiency and possibly ruining the battery.

Open Circuit Voltage Test (OCV)

Check static battery voltage with multimeter. Voltage should be
no less than 12.8 Vdc. Charge battery if voltage is lower than
12.8 Vdc.

Load Test

A battery may pass the OCV test, but still not have the storage
capacity necessary to properly function.
1. Connect multimeter to the battery as if performing the
OCV test.
2. Turn the engine over using the electric starter.
3. Replace battery if Vdc drops below 9.5Vdc.
NOTE: Battery load test tools can be purchased
commercially. Follow the manufactures' instructions
for use.

Specific Gravity Test (Conventional Battery)

NOTE: Do not attempt to open the vent cover on a
fresh pack battery.
A battery hydrometer (PN 2870836) can be used to measure
electrolyte strength or specific gravity. As the battery goes
through the charge/discharge cycle, the electrolyte goes from a
heavy, more acidic state at full charge to a light, more water state
when discharged. The hydrometer can measure state of charge
and differences between cells in a multi-cell battery. Readings of
1.270 or greater should be observed in a fully charged battery.
Differences of more than 0.025 between the lowest and highest
cell readings indicate a need to replace the battery.
Battery Voltage
CONVENTIONAL
STATE OF CHARGE
LEAD-ACID
100% CHARGED 12.60v
75% CHARGED 12.40v
50% CHARGED 12.10v
25% CHARGED 11.90v
0% CHARGED < 11.80v
11.4
STATE OF CHARGE
100% CHARGED
75% CHARGED
50% CHARGED
25% CHARGED
0% CHARGED

Off Season Storage

To prevent battery damage during extended periods of non-use,
the following maintenance items must be performed.
1.
D
ENTER THE BATTERY OR THE ACID WILL BE NEUTRALIZED
2.
3.
4.
NOTE: Stored batteries lose their charge at the rate
of 1% per day. They should be fully recharged every
30 to 60 days during a non-use period. If stored
during winter months, the electrolyte will freeze at
higher temperatures as the battery discharges.
1.265
1.225
1.200
1.150
YUMACRON TYPE
1.100
12.70v 1.050
12.50v
12.20v
12.00v
< 11.90v
Battery Voltage Per Cell
CONVENTIONAL
LEAD-ACID
1.265v
1.210v
1.160v
1.120v
< 1.100v
Remove battery from machine and wash the case and
battery tray with a mild solution of baking soda and water.
Rinse with of fresh water after cleaning.
CAUTION
O NOT ALLOW ANY OF THE BAKING SODA SOLUTION TO
Using a wire brush or knife, remove any corrosion from the
cables and terminals.
Charge at a rate no greater than 1/10 of the battery's amp/
hr. capacity.
Store the battery in a cool, dry place.
Specific Gravity Freezing Point
Specific Gravity of Electrolyte
YUMACRON TYPE
1.275v
1.225v
1.175v
1.135v
< 1.115v
Freezing Point
-75_F (-59_C)
-35_F (-37_C)
-17_F (-27_C)
5_F (-15_C)
18_F (-8_C)
27_F (-3_C)
.